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General Electric DS200DACAG1ACD Mark VIe Series Digital-to-Analog Converter Board

Configured for precise digital-to-analog signal conversion in GE Mark VIe control platforms, the General Electric DS200DACAG1ACD (DS200DACA Digital-to-Analog Converter Output Board) provides direct physical/electrical execution. Operating as a 16-channel analog output module, it converts digital controller commands into calibrated current and voltage loops for direct actuation of turbine fuel valves, servo positioners, and variable speed drives. The module features embedded channel-level diagnostics and short-circuit protection to maintain loop stability under variable load profiles.

Hardware Specifications

Parameter	Specification
Model	DS200DACAG1ACD
Brand	General Electric (GE)
Origin	USA
Weight	0.5 kg
Dimensions	27.9 cm x 12.7 cm x 4 cm
Operating Temp	-40 to +75 deg C
Power Consumption	+5 VDC (Logic) / +24 VDC (Field Power)
Output Channels	16 software-selectable channels
Output Signal Ranges	4-20 mA (0-750 ohm load) / 0-10 VDC (>2 kohm load)
Resolution	16-bit DAC
Signal Accuracy	+/-0.05% FS at 25 deg C; +/-0.10% FS (-40 to +75 deg C)
Update Rate	800 samples/sec across channels
Common Mode Rejection	95 dB CMRR
Insulation Coating	100 um conformal coating

Industrial Backplane Communication and I/O Density Scaling

The DS200DACAG1ACD integrates with the Speedtronic Mark VIe control backplane via a 64-pin connector interface designed for high backplane bus communication velocity and high I/O density scaling. The onboard logic processes 16-bit DAC values delivered deterministically over the system bus, executing updates at an aggregate rate of 800 samples per second across all 16 output channels. To maintain loop integrity across high-density I/O distributions, each channel incorporates hardware-based EMC filtering and individual output monitoring circuits. Firmware flash compatibility checks are performed during backplane initialization to prevent state execution errors caused by revision mismatches across redundant processor sets.

Frequently Asked Questions

Q: Can the DS200DACAG1ACD module be installed or removed while the backplane is powered?

A: No. Power to the rack must be disconnected prior to inserting or extracting the module. Inserting the board into an energized 64-pin backplane can cause pin arcing and damage the onboard logic power traces or field-side driver ICs.

Q: How does the channel output behave in the event of a field wiring short circuit?

A: Each output channel incorporates independent short-circuit current limiting and thermal protection circuits. If a short circuit occurs across the field terminals, the driver limits the maximum current output to prevent component damage until the fault condition is cleared.

Field Installation Guidelines

Mount the board using the integrated card guides within the Mark VIe chassis, ensuring the 64-pin edge connector seats completely into the backplane socket. Secure all retention screws to provide a low-resistance chassis ground path for the onboard EMC filters.

Field wiring must be terminated at the dual 16-position terminal blocks using shielded twisted-pair cables. Ground all cable shields at a single chassis grounding point on the rack frame to prevent ground loops that compromise DAC accuracy. Maintain a minimum engagement of 5 threads on NPT conduit fittings when routing field cables into the control enclosure, and isolate low-voltage 0-10 VDC / 4-20 mA signal lines from high-voltage AC power cables by at least 30 cm.

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